I am having a problem specifically with uploading PDF files when using Firefox (27.0.1).
Currently, I have the following in my mimes.php file:
'pdf' => array('application/pdf', 'application/x-download', 'application/octet-stream', 'application/binary', 'application/unknown'),
I have tried many variations of the above, and nothing has worked so far.
Has anyone found the proper type to add for PDFs that works with Firefox?